Gas-burner



G. H. STEVENS.

GAS BURNER.

APPLICATION FILED OCT. 29, 1919.

1,350,678. P tentedA g- 24,1920.

' A TTOR/VEYS.

, mechanism which is not GEORGE H. STEVENS, 0F WOODBURY HEIGHTS, NEWJERSEY.

GAS-BURNER.

Application filed October 29, 1919.

To all whom it may concern:

Be it known that I, GEORGE H. STEVENS, a citizen of the United States,residing at Woodbury Heights, county of Gloucester, State of New Jersey,have invented a new and useful Gas-Burner, of which the following is aspecification.

I l y present invention relates to a gas burner wherein there isemployed a pyrophorous metal alloy adapted to be abraded by a suitablesubstance such as for example a steel wheel having an irregular surfaceor serrations at, its periphery.

In devices of this character as heretofore tion of the igniting deviceoften causes the loosening of the burner tips and in some cases causesthem to become broken.

One object of my present invention is to devise a construction whichwill overcome the excessive shock which has heretofore been present indevices of this character, thereby eliminating the loosening or breakingof the burner tips.

Another object of my invention is to devise a novel construction of areleasing dependent upon the strength or condition of a spring or othermember which is subject to change of shape or strength and to provide anovel construction of controlling mechanism so that the releasingmechanism is set into operation at a predetermined point.

With the above and other as will be hereinafter more fully set forth inthe detail description, my invention comprehends a novel construction ofgas burner and a novel construction of ignition means for the burner.

Itfurther comprehends a novel construction and arrangement of a shockabsorbing member and novel means for releasing it at the proper time.

It further comprehends a novel construction for supporting and operatingthe abracling member including a novel construction of cams and novelmeans for operatively connecting them together.

It further comprehends a novel construction of a burner casing, a'novelconstruction and arrangement of an igniting device and novel means foroperating the valve mechanism for the burner in such a manner thatobjects in view Specification of Letters Patent.

Patented A11 24, 1920. Serial No. 334,120.

the gas is permitted to escape in time to reach the outlet from theburner prior to the sparking of the pyrophorous metal.

ther novel features of construction and advantage will hereinafter moreclearly appear in the detailed description of the invention.

For the purpose of illustrating my invention, I have shown in theaccompanying drawing a typical embodiment which is at present preferredby me, since the same will give in practice satisfactory and reliableresults, although it is to be understood that the variousinstrumentalities of which my invention consists can be variouslyarranged and organized and that my invention is not limited to theprecise arrangement and organization of these instrumentalities asherein shown and described.

Figure 1 represents, in front elevation, a gas burner embodying myinvention.

Fig. 2 represents a side elevation of the burner.

Fig. 3 represents a section on line 3-8 of L ig. 2. r

Fig. 4 represents a section on line H of Fig. 3

Fig. 5 represents a plan view of one of the cams in detached positionthe shaft on which it is mounted being shown in section. v Fig. 6represents, in side elevation and on an enlarged scale, a portion of theburner.

Fig. 7 represents a bottom plan view of a portion of the mechanismshowing more par- 'ticularly the manner in which the valve and the shaftof the igniting device are inter geared.

Similar numerals of reference indicate corresponding parts.

' eferring to the drawings,

The casing of the burner in niauufacture is parts, the main forsimplicity preferably made of two body portion 1 and the auxiliary bodyportion 2 in the form of a bracket. The body portion 1 has mounted in ita one-way valve 3 to one end of which is connected a gear segment lwhichmeshes with a gear segment 5 which is fixed to a shaft 6. This shaft 6is journaled in a plate 7 which is clamped to the body portion 1 as wellas the laterally extending flange 8 of the bracket 2 by means of athreaded pillar 9 in threaded engagement with the face 39 and a shoulderextends, the rock arm body portion 1. The pillar 9 carries in the usualmanner the burner tip 10. The flange 8 has opposite sides downwardlydeflected as at 11 so as to closely engage the sides of the body portionand prevent any lateral movement of the bracket 2 or the plate 7relatively to the body portion 1.- The shaft. 6 has connected to it inany desired manner the actuating handle 12. The shaft 6 above the plate7 has fixed to it a cam 13 the construction of which is best seen inFig. 5. This cam 13 is provided with a shoulder 14,- a recess 15, ashoulder 16, a face 17, a cam face 18 and a recess 19.

20 designates a sleeve or cylinder which has a reduced neck 21 journaledin the laterally extending. .upper portion 22 of the bracket 2. Abovethe neck 21 the sleeve 20 is provided with the polygonal shaped portien23 from'which extends upwardly an internally threaded tube 2st. Thepolygonal shaped portion 23 interlocks with a recess of correspondingcontour in a disk 25 so that this disk 25 is fixed with the sleeve 20.The disk 25 has mounted on its upper face a coil spring 26 which engageswith the teeth of the ratchet 27 formed on the under side of a frictionwheel 28 which is loosely mounted on the internally threaded tube 2awhich latter forms a bearing for the friction wheel. A screw29 inthreaded engagement with the tube 24retains the friction wheel inassembled position.

The flange 22 of the bracket 2 is extended upwardly and forms thecontainer 30* to receive the stick 31 of pyrophorus metal alloy. Theretainer 30 is provided with .a slot 32 into'which the upper end of arock arm- 33 being pivotally supported at 3 1 on the bracket 2 and aspring 35 is provided which tends to move the upper end of the rock arm33'inwardly sothat the sparking alloy will be retained in contact withthe serrated periphery of'the frietion wheel. The sleeve 20 has fixed toits lower end a cam 36 which. is provided with a pin 37 which extendsinto the recess 15 of the cam 13 so as to be positioned between theshoulders 14: and 16. The cam 36 is pro vided with a peripheral recess38, the cam 4-1 designates a shock absorbing springone end of which issecured to an extension of ed in order to adapt the bracket 2 by meansof a rivet or other fastening device 42 and the bracket is provided withoutwardly extending ears &3 which serve as guides for the spring 41.'lhe free end of the spring 41 is inwardly deflected to form a roundedcontact portion M. It will of course be understood that the body portion1 is suitably internally threadit to be connected to the ordinarygasfixturej The shaft 6 has con nected to it one end of a spring 15 theother end of which is fixed-to a sleeve 20' in any deof the pyrophorousmetal takes place.

present construction 'tion of which engages direction thereby turningthe contact portion 4a of the spring 4.1 engages the recess orindentation 38 of cam 36. I

The operator turns the handle 12 in a clockwise direction and owing tothe provision of the intermeshing gear segments a and 5 the cam 13 willbe turned and the cam face 18 engaging the rounded contact portion ofthe spring a1 will move it outwardly so that it is released from itsengagement with the recess 38 of the cam 36 whereupon the sleeve 20 willrevolve at a relatively high speed due to the tension of the spring -15and the pawl 26 which is iii-engagement with one of the teeth of theratchet wheel 27 carried by the friction wheel 23 to cause the frictionwheel to revolve a quarter turn so that the desired sparks will-beproduced by contact with the stick 31 of p'yrophorous metal. Thereleasing mechanism for the sleeve 20 which effects the operation of thefriction the wheel is operated at a predetermined time without regard tothe strength or condition of a springor other member subject to changeof strength or shape. The parts are arranged in such a, manner that thegas is permitted toescap e let from the burner tip before the sparkTinghe undue shock which is ordinarily present in devices of this characteris eliminated in my by the action of the spring a1, the contact'portherecesses 19 and 40 in order to absorb the shock.

In order to turn OK the gas the operator turns the handle 12 in acounterclockwise 7 the cam 13 in a counterclockwise direction and theshoulder 14 engaging the pin 37 causes the cam 36 and the sleeve 20 tobe returned to their shock absorbing initial position at which time thecontact portion 4% of the'spring 11 interlocks with the reeess38 of thecam 36. This operation also rotates the valve 3 to bring it into itsclosed position.

The friction wheel 28 forms an abrading member and since there is norelatively slow into its closed positlon.

for example, by passing in time to reach the out- It will now beapparent that I have devised a novel and useful construction of a gasburner which embodies the features of advantage enumerated as desirablein the statement of the invention and the above description, and while Ihave, in the present instance, shown and described a preferredembodiment thereof which will give in practice satisfactory and reliableresults, it is to be understood that such embodiment is susceptible ofmodification in various particulars without departing from the spirit orscope of the invention or sacrificing any of its advantages.

aving thus described my invention, what I claim as new and desire tosecure by Letters Patent, is z- 1. In a gas burner, the combination withthe burner proper having a valve controlled inlet, of an abrading wheel,pyrophorous metal in contact with said wheel, a spring actuated devicetov revolve said wheel, and shock absorbing means for said device toretain it in position to be released and to absorb the shock resultingfrom its being released.

2. A gas burner having a valve controlled inlet, an abrading wheelrotatably mounted, pyrophorous metal cooperating with said wheel, a camto effect rotation of said wheel, a tension device, means to roactuatesaid valve, a second cam to release said first cam, and a shockabsorbing device cooperating with said cams.

3. A gas burner, comprising a burner proper, a valve controllingadmission to the burner proper, a shaft intergeared with said valve, acam on said shaft, a member rotatably mounted, a pawl carried by saidmember, a cam on said member, a tension device for said member, sparkproducing mechanism actuated by said member, a shock absorbing devicecooperating with the cam of said member and actuated by the cam on saidshaft to release said member when under tension, and means cooperatingwith said cam to effect the return of said member to its initialposition.

4. A gas burner, comprising a burner proper, a valve controlling theadmission of gas to the burner proper, a shaft operatively connectedwith said valve to open and close it, a sleeve loosely mounted on saidshaft, a tension device for said shaft, spark producing mechanismactuated by said sleeve, a cam on said sleeve, a spring engaging saidcam to retain said sleeve in tensioned position, a cam on said shafthaving means to release said spring when rotated, and means to actuatesaid shaft.

5. A gas burner, comprising a burner proper, a valve controlling theflow of gas to said burner, a shaft connected to said valve to actuateit, a sleeve loosely mounted on said shaft, spark producing mechanismactuated by said sleeve, a cam on said sleeve having an outwardlyextending pin, a cam fixed to said shaft and having a recess into whichsaid pin extends, the cam on said shaft having a shoulder, and a springcooperating with said cams, said spring cooperating with the cam on saidsleeve to retain it in position, a cam on said shaft cooperating withsaid spring to release it from the other cam, and means to actuate saidshaft.

GEORGE H. STEVENS.

